TY - BOOK AU - Ungrad,Helmut AU - Winkler,Wilibald AU - Wiszniewski,Andrzej TI - Protection techniques in electrical energy systems SN - 0824796608 PY - 1995/// CY - New York PB - Marcel Dekker KW - Electric power systems KW - Protection N1 - Translation of: Schutztechnik in Elektroenergiesystemen; p. 364-381 ER -